Solutions by everydaycalculation.com
1st number: 10/30, 2nd number: 1 15/30
1030 - 4530 is -76.
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Related: 20/30-45/30 10/30-90/30 10/60-45/30 10/30-45/60 10/90-45/30 10/30-45/90 50/30-45/30 70/30-45/30
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